Armored thermocouple
1、 Overview
Armored thermocouple has the advantages of bending, high pressure resistance, fast thermal response time and durability. It is the same as assembly thermocouple and thermal resistance. As a sensor for measuring temperature, it is usually used together with display instrument, recorder and electronic regulator, and it can also be used as the temperature sensing element of assembly thermocouple. It can directly measure the temperature of liquid, steam, gas medium and solid surface in the range of 0 ℃ ~ 1300 ℃ in various production processes.
Armored thermocouples, like general industrial thermocouples, are matched with display instruments to automatically detect or adjust the surface temperature of gas, liquid medium or solid within a certain range of use.
2、 How it works
Armored thermocouple is a circuit formed by welding two ends of two different components of conductor. The direct temperature measuring end is called the measuring end, and the terminal is called the reference end. When there is a temperature difference between the measuring end and the reference end, a thermal current will be generated in the circuit. When the display instrument is connected, the corresponding temperature value of the thermoelectric EMF generated by the thermocouple will be indicated on the instrument.
The thermoelectric EMF of armored thermocouple will increase with the temperature of the measuring end. The magnitude of thermoelectric EMF is only related to the conductor material of armored thermocouple and the temperature difference between the two ends, and has nothing to do with the length and diameter of thermoelectric pole.
The structure of armored thermocouple is made of conductor, insulating magnesium oxide and 1Cr18Ni9Ti stainless steel protective tube. The armored thermocouple products are mainly composed of junction box, terminal block and armored thermocouple, and equipped with various installation and fixing devices. Armored thermocouple is divided into two types: insulation type and shell type.
The explosion-proof armored thermocouple uses the principle of gap explosion-proof to design the junction box and other components with sufficient strength to seal all the components that will produce sparks, arcs and dangerous temperatures in the junction box cavity. When the cavity explodes, it can extinguish and cool through the gap of the joint surface, so that the flame and temperature after explosion cannot be transmitted outside the cavity, so as to carry out explosion-proof.
3、 Characteristics of armored thermocouple
1. The thermal response time is less and the dynamic error is reduced;
2. It can be installed and used by bending;
3. Large measuring range;
4. High mechanical strength, good pressure resistance;
4、 Technical parameters
1). Product executive standard
IEC584 IEC1515 GB／T16839－1997 JB／T5582－91
2). Insulation resistance at room temperature
The insulation resistance between the sheathing couple and the outer sleeve is not less than 1000m Ω. M when the ambient temperature is 20 ± 15 ℃, the relative humidity is not more than 80%, and the test voltage is 500 ± 50V (DC). That is to say, the insulation resistance of 1m long sample is 1000m Ω; the insulation resistance of 10m long sample is 100m Ω.
3). Temperature measurement range and tolerance
model | Graduation | Allowable error and couple grade | |||
Class I | Class II | ||||
Tolerance value | Temperature measurement range ℃ | Tolerance value | Temperature measurement range ℃ | ||
WRNK | K | ±1.5℃ | -40～+375 | ±2.5℃ | -40～+333 |
±0.004│t│ | 375～1000 | ±0.0075│t│ | 333～1200 | ||
WRMK | N | ±1.5℃ | -40～+375 | ±2.5℃ | -40～+333 |
±0.004│t│ | 375～1000 | ±0.0075│t│ | 333～1200 | ||
WREK | E | ±1.5℃ | -40～+375 | ±1.5℃ | -40～+333 |
±0.004│t│ | 375～800 | ±0.004│t│ | 333～900 | ||
WRFK | J | ±1.5℃ | -40～+375 | ±1.5℃ | -40～+333 |
±0.004│t│ | 375～750 | ±0.004│t│ | 333～750 | ||
WRCK | T | ±1.5℃ | -40～+125 | ±1℃ | -40～+333 |
±0.004│t│ | 125～350 | ±0.0075│t│ | 133～350 | ||
WRPK | S | ±1℃ | 0～+1100 | ±2.5℃ | 0～600 |
±[1+0.003(t-1100)] | 1100～1600 | ±0.0025│t│ | 600～1600 | ||
4). Thermal response time τ 0.5
When the temperature changes in a step, the time required for the output of the thermocouple to change to 50% of the change in the step is called the thermal corresponding time, which is expressed by τ 0.5.
Refer to table for thermal response time τ 0.5:
Casing diameter (mm) | Shell type | Insulated type |
3.0 | 0.6 | 1.2 |
4.0 | 0.8 | 2.5 |
5.0 | 1.2 | 4.0 |
6.0 | 2.0 | 6.0 |
8.0 | 4.0 | 8.0 |
5). List of evidence collection
Explosion proof level | Explosion proof Certificate No | Certification body |
dIIBT4 | GYB02544 | NEPSI |
dIIBT5 | GYB02562 | NEPSI |
dIICT4 | GYB02621 | NEPSI |
dIICT5 | GYB02632 | NEPSI |
iaIICT6 | GYB02653 | NEPSI |
Note: nepsi explosion-proof certification department is ****** instrument explosion-proof safety supervision and inspection station
6). Recommended temperature of armored thermocouple
varieties | Casing material | Outer diameter (mm) | Service temperature (℃) | |
Long term service temperature | Short term service temperature | |||
Armored nickel chromium nickel silicon | 1Cr18Ni9Ti | 2.0 | 550 | 600 |
3.0,4.0 | 600 | 700 | ||
5.0,6.0 | 700 | 800 | ||
8.0 | 800 | 850 | ||
GH3030 | 2.0,3.0 | 800 | 900 | |
4.0,5.0 | 900 | 1000 | ||
6.0,8.0 | 1000 | 1100 | ||
Armored nickel chromium silicon nickel silicon | 1Cr18Ni9Ti | 2.0 | 600 | 700 |
3.0 | 800 | 900 | ||
4.0,5.0,6.0 | 900 | 1000 | ||
8.0 | 1000 | 1100 | ||
GH3030 | 2.0,3.0 | 900 | 1000 | |
4.0,5.0 | 1000 | 1100 | ||
6.0,8.0 | 1100 | 1200 | ||
GH3039 | 2.0,3.0,4.0 | 1000 | 1100 | |
5.0,6.0,8.0 | 1100 | 1200 | ||
Armored nickel chromium copper nickel | 1Cr18Ni9Ti | 2.0,3.0 | 350 | 450 |
4.0,5.0,6.0,8.0 | 450 | 550 | ||
Armored iron copper nickel | 1Cr18Ni9Ti | 2.0,3.0 | 300 | 400 |
4.0,5.0,6.0,8.0 | 400 | 500 | ||
Armored copper copper nickel | 1Cr18Ni9Ti | 2.0 | 150 | 200 |
3.0,4.0,5.0 | 200 | 250 | ||
6.0,8.0 | 250 | 300 | ||
Armored Platinum Rhodium 10 platinum | GH3039 | 4.0 | 1000 | 1100 |
5.0,6.0,8.0 | 1100 | 1200 | ||
5、 Product selection
W | Temperature instrument | ||||||||
R | Thermocouple | ||||||||
Material of temperature sensing element | |||||||||
K | Armored | ||||||||
Even filament logarithm | |||||||||
Installation and fixation form | |||||||||
Wiring device form | |||||||||
Working end form | |||||||||
Form of additional device | |||||||||
W | R | N | K | 2 | 1 | 0 | 1 | M | |
6、 Model and specification
1. Armored thermocouple of blowout proof junction box
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-121 WRPK2-121 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-121 WRMK2-121 | N | |||
Armored nickel chromium nickel silicon | WRNK-121 WRNK2-121 | K | |||
Armored nickel chromium copper nickel | WREK-121 WREK2-121 | E | |||
Armored copper copper nickel | WRCK-121 WRCK2-121 | T | |||
Armored iron copper nickel | WRFK-121 WRFK2-121 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-221 WRPK2-221 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-221 WRMK2-221 | N | |||
Armored nickel chromium nickel silicon | WRNK-221 WRNK2-221 | K | |||
Armored nickel chromium copper nickel | WREK-221 WREK2-221 | E | |||
Armored copper copper nickel | WRCK-221 WRCK2-221 | T | |||
Armored iron copper nickel | WRFK-221 WRFK2-221 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-321 WRPK2-321 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-321 WRMK2-321 | N | |||
Armored nickel chromium nickel silicon | WRNK-321 WRNK2-321 | K | |||
Armored nickel chromium copper nickel | WREK-321 WREK2-321 | E | |||
Armored copper copper nickel | WRCK-321 WRCK2-321 | T | |||
Armored iron copper nickel | WRFK-321 WRFK2-321 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-421 WRPK2-421 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-421 WRMK2-421 | N | |||
Armored nickel chromium nickel silicon | WRNK-421 WRNK2-421 | K | |||
Armored nickel chromium copper nickel | WREK-421 WREK2-421 | E | |||
Armored copper copper nickel | WRCK-421 WRCK2-421 | T | |||
Armored iron copper nickel | WRFK-421 WRFK2-421 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-521 WRPK2-521 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-521 WRMK2-521 | N | |||
Armored nickel chromium nickel silicon | WRNK-521 WRNK2-521 | K | |||
Armored nickel chromium copper nickel | WREK-521 WREK2-521 | E | |||
Armored copper copper nickel | WRCK-521 WRCK2-521 | T | |||
Armored iron copper nickel | WRFK-521 WRFK2-521 | J |
2. Waterproof junction box armored thermocouple
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-131 WRPK2-131 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-131 WRMK2-131 | N | |||
Armored nickel chromium nickel silicon | WRNK-131 WRNK2-131 | K | |||
Armored nickel chromium copper nickel | WREK-131 WREK2-131 | E | |||
Armored copper copper nickel | WRCK-131 WRCK2-131 | T | |||
Armored iron copper nickel | WRFK-131 WRFK2-131 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-231 WRPK2-231 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-231 WRMK2-231 | N | |||
Armored nickel chromium nickel silicon | WRNK-231 WRNK2-231 | K | |||
Armored nickel chromium copper nickel | WREK-231 WREK2-231 | E | |||
Armored copper copper nickel | WRCK-231 WRCK2-231 | T | |||
Armored iron copper nickel | WRFK-231 WRFK2-231 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-331 WRPK2-331 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-331 WRMK2-331 | N | |||
Armored nickel chromium nickel silicon | WRNK-331 WRNK2-331 | K | |||
Armored nickel chromium copper nickel | WREK-331 WREK2-331 | E | |||
Armored copper copper nickel | WRCK-331 WRCK2-331 | T | |||
Armored iron copper nickel | WRFK-331 WRFK2-331 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-431 WRPK2-431 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-431 WRMK2-431 | N | |||
Armored nickel chromium nickel silicon | WRNK-431 WRNK2-431 | K | |||
Armored nickel chromium copper nickel | WREK-431 WREK2-431 | E | |||
Armored copper copper nickel | WRCK-431 WRCK2-431 | T | |||
Armored iron copper nickel | WRFK-431 WRFK2-431 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-531 WRPK2-531 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-531 WRMK2-531 | N | |||
Armored nickel chromium nickel silicon | WRNK-531 WRNK2-531 | K | |||
Armored nickel chromium copper nickel | WREK-531 WREK2-531 | E | |||
Armored copper copper nickel | WRCK-531 WRCK2-531 | T | |||
Armored iron copper nickel | WRFK-531 WRFK2-531 | J |
3. Explosion proof armored thermocouple
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-141 WRPK2-141 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-141 WRMK2-141 | N | |||
Armored nickel chromium nickel silicon | WRNK-141 WRNK2-141 | K | |||
Armored nickel chromium copper nickel | WREK-141 WREK2-141 | E | |||
Armored copper copper nickel | WRCK-141 WRCK2-141 | T | |||
Armored iron copper nickel | WRFK-141 WRFK2-141 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-241 WRPK2-241 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-241 WRMK2-241 | N | |||
Armored nickel chromium nickel silicon | WRNK-241 WRNK2-241 | K | |||
Armored nickel chromium copper nickel | WREK-241 WREK2-241 | E | |||
Armored copper copper nickel | WRCK-241 WRCK2-241 | T | |||
Armored iron copper nickel | WRFK-241 WRFK2-241 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-341 WRPK2-341 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-341 WRMK2-341 | N | |||
Armored nickel chromium nickel silicon | WRNK-341 WRNK2-341 | K | |||
Armored nickel chromium copper nickel | WREK-341 WREK2-341 | E | |||
Armored copper copper nickel | WRCK-341 WRCK2-341 | T | |||
Armored iron copper nickel | WRFK-341 WRFK2-341 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-441 WRPK2-441 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-441 WRMK2-441 | N | |||
Armored nickel chromium nickel silicon | WRNK-441 WRNK2-441 | K | |||
Armored nickel chromium copper nickel | WREK-441 WREK2-441 | E | |||
Armored copper copper nickel | WRCK-441 WRCK2-441 | T | |||
Armored iron copper nickel | WRFK-441 WRFK2-441 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-541 WRPK2-541 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-541 WRMK2-541 | N | |||
Armored nickel chromium nickel silicon | WRNK-541 WRNK2-541 | K | |||
Armored nickel chromium copper nickel | WREK-541 WREK2-541 | E | |||
Armored copper copper nickel | WRCK-541 WRCK2-541 | T | |||
Armored iron copper nickel | WRFK-541 WRFK2-541 | J |
4. Round plug armored thermocouple
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-161 WRPK2-161 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-161 WRMK2-161 | N | |||
Armored nickel chromium nickel silicon | WRNK-161 WRNK2-161 | K | |||
Armored nickel chromium copper nickel | WREK-161 WREK2-161 | E | |||
Armored copper copper nickel | WRCK-161 WRCK2-161 | T | |||
Armored iron copper nickel | WRFK-161 WRFK2-161 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-261 WRPK2-261 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-261 WRMK2-261 | N | |||
Armored nickel chromium nickel silicon | WRNK-261 WRNK2-261 | K | |||
Armored nickel chromium copper nickel | WREK-261 WREK2-261 | E | |||
Armored copper copper nickel | WRCK-261 WRCK2-261 | T | |||
Armored iron copper nickel | WRFK-261 WRFK2-261 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-361 WRPK2-361 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-361 WRMK2-361 | N | |||
Armored nickel chromium nickel silicon | WRNK-361 WRNK2-361 | K | |||
Armored nickel chromium copper nickel | WREK-361 WREK2-361 | E | |||
Armored copper copper nickel | WRCK-361 WRCK2-361 | T | |||
Armored iron copper nickel | WRFK-361 WRFK2-361 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-461 WRPK2-461 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-461 WRMK2-461 | N | |||
Armored nickel chromium nickel silicon | WRNK-461 WRNK2-461 | K | |||
Armored nickel chromium copper nickel | WREK-461 WREK2-461 | E | |||
Armored copper copper nickel | WRCK-461 WRCK2-461 | T | |||
Armored iron copper nickel | WRFK-461 WRFK2-461 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-561 WRPK2-561 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-561 WRMK2-561 | N | |||
Armored nickel chromium nickel silicon | WRNK-561 WRNK2-561 | K | |||
Armored nickel chromium copper nickel | WREK-561 WREK2-561 | E | |||
Armored copper copper nickel | WRCK-561 WRCK2-561 | T | |||
Armored iron copper nickel | WRFK-561 WRFK2-561 | J |
5. Flat plug armored thermocouple
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-171 WRPK2-171 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-171 WRMK2-171 | N | |||
Armored nickel chromium nickel silicon | WRNK-171 WRNK2-171 | K | |||
Armored nickel chromium copper nickel | WREK-171 WREK2-171 | E | |||
Armored copper copper nickel | WRCK-171 WRCK2-171 | T | |||
Armored iron copper nickel | WRFK-171 WRFK2-171 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-271 WRPK2-271 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-271 WRMK2-271 | N | |||
Armored nickel chromium nickel silicon | WRNK-271 WRNK2-271 | K | |||
Armored nickel chromium copper nickel | WREK-271 WREK2-271 | E | |||
Armored copper copper nickel | WRCK-271 WRCK2-271 | T | |||
Armored iron copper nickel | WRFK-271 WRFK2-271 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-371 WRPK2-371 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-371 WRMK2-371 | N | |||
Armored nickel chromium nickel silicon | WRNK-371 WRNK2-371 | K | |||
Armored nickel chromium copper nickel | WREK-371 WREK2-371 | E | |||
Armored copper copper nickel | WRCK-371 WRCK2-371 | T | |||
Armored iron copper nickel | WRFK-371 WRFK2-371 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-471 WRPK2-471 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-471 WRMK2-471 | N | |||
Armored nickel chromium nickel silicon | WRNK-471 WRNK2-471 | K | |||
Armored nickel chromium copper nickel | WREK-471 WREK2-471 | E | |||
Armored copper copper nickel | WRCK-471 WRCK2-471 | T | |||
Armored iron copper nickel | WRFK-471 WRFK2-471 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-571 WRPK2-571 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-571 WRMK2-571 | N | |||
Armored nickel chromium nickel silicon | WRNK-571 WRNK2-571 | K | |||
Armored nickel chromium copper nickel | WREK-571 WREK2-571 | E | |||
Armored copper copper nickel | WRCK-571 WRCK2-571 | T | |||
Armored iron copper nickel | WRFK-571 WRFK2-571 | J |
6. Compensating conductor type armored thermocouple
name | model | Graduation | Length mm | Diameter mm | Installation of fixtures |
Armored Platinum Rhodium 10 platinum | WRPK-191 WRPK2-191 | S | 50 100 150 200 250 300 350 400 500 600 700 800 900 1000 1500 2000 3000 4000 5000 7500 10000 15000 20000 30000 40000 50000 75000 100000 150000 200000 All kinds of sizes | Φ0.25 Φ0.5 Φ1 Φ1.5 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 | No fixture |
Armored nickel chromium silicon nickel silicon | WRMK-191 WRMK2-191 | N | |||
Armored nickel chromium nickel silicon | WRNK-191 WRNK2-191 | K | |||
Armored nickel chromium copper nickel | WREK-191 WREK2-191 | E | |||
Armored copper copper nickel | WRCK-191 WRCK2-191 | T | |||
Armored iron copper nickel | WRFK-191 WRFK2-191 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-291 WRPK2-291 | S | Fixing ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-291 WRMK2-291 | N | |||
Armored nickel chromium nickel silicon | WRNK-291 WRNK2-291 | K | |||
Armored nickel chromium copper nickel | WREK-291 WREK2-291 | E | |||
Armored copper copper nickel | WRCK-291 WRCK2-291 | T | |||
Armored iron copper nickel | WRFK-291 WRFK2-291 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-391 WRPK2-391 | S | Movable ferrule thread | ||
Armored nickel chromium silicon nickel silicon | WRMK-391 WRMK2-391 | N | |||
Armored nickel chromium nickel silicon | WRNK-391 WRNK2-391 | K | |||
Armored nickel chromium copper nickel | WREK-391 WREK2-391 | E | |||
Armored copper copper nickel | WRCK-391 WRCK2-391 | T | |||
Armored iron copper nickel | WRFK-391 WRFK2-391 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-491 WRPK2-491 | S | Fixed ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-491 WRMK2-491 | N | |||
Armored nickel chromium nickel silicon | WRNK-491 WRNK2-491 | K | |||
Armored nickel chromium copper nickel | WREK-491 WREK2-491 | E | |||
Armored copper copper nickel | WRCK-491 WRCK2-491 | T | |||
Armored iron copper nickel | WRFK-491 WRFK2-491 | J | |||
Armored Platinum Rhodium 10 platinum | WRPK-591 WRPK2-591 | S | Movable ferrule flange | ||
Armored nickel chromium silicon nickel silicon | WRMK-591 WRMK2-591 | N | |||
Armored nickel chromium nickel silicon | WRNK-591 WRNK2-591 | K | |||
Armored nickel chromium copper nickel | WREK-591 WREK2-591 | E | |||
Armored copper copper nickel | WRCK-591 WRCK2-591 | T | |||
Armored iron copper nickel | WRFK-591 WRFK2-591 | J |
